<?php
	class BookedImpression
	{
		public const UNLIMITED = -1;
		public const TBD = 0;
		public const LIMITED = 1;
		private $aDescrs = new array('Unlimited', 'To be decided', 'Limited to');
		//
		public function __construct(){}
		public function getDescription($index)
		{
			$return $this->aDescrs[$index + 1];
		}
	}
?>